1312181160 has 64 divisors (see below), whose sum is σ = 3940202880. Its totient is φ = 349589760.

The previous prime is 1312181141. The next prime is 1312181161. The reversal of 1312181160 is 611812131.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1312181160.

It is not an unprimeable number, because it can be changed into a prime (1312181161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142290 + ... + 151230.

It is an arithmetic number, because the mean of its divisors is an integer number (61565670).

Almost surely, 2^1312181160 is an apocalyptic number.

1312181160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1312181160 is an abundant number, since it is smaller than the sum of its proper divisors (2628021720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1312181160 is a wasteful number, since it uses less digits than its factorization.

1312181160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10178 (or 10174 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 24.

The square root of 1312181160 is about 36224.0411881391. The cubic root of 1312181160 is about 1094.7911196406.

Adding to 1312181160 its reverse (611812131), we get a palindrome (1923993291).

The spelling of 1312181160 in words is "one billion, three hundred twelve million, one hundred eighty-one thousand, one hundred sixty".